CN204477226U - U-shaped back structure ball screw pair - Google Patents
U-shaped back structure ball screw pair Download PDFInfo
- Publication number
- CN204477226U CN204477226U CN201520122399.0U CN201520122399U CN204477226U CN 204477226 U CN204477226 U CN 204477226U CN 201520122399 U CN201520122399 U CN 201520122399U CN 204477226 U CN204477226 U CN 204477226U
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- CN
- China
- Prior art keywords
- ball
- rolling track
- spiral rolling
- ball screw
- ball nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a kind of screw pair, be specially U-shaped back structure ball screw pair, comprise ball screw, ball nut and steel ball, the internal thread of ball nut matches with the outside thread on ball screw formation spiral rolling track, steel ball is arranged in spiral rolling track, described ball nut there is back groove, in back groove, reverser is installed, reverser is arranged the spiral rolling track matched with ball nut, spiral rolling track is as back passage, and spiral rolling track and ball nut internal thread form closed-loop path.The U-shaped back structure ball screw pair that the utility model provides, adopts the reverser of oval turn-knob, reverser is arranged spiral rolling track as back structure, do not affect the rigidity of ball nut entirety, and nut can be made again effectively to carry out mild accurately transmission.Meanwhile, not only wear resistance is good when running up for the ball screw pair of this back structure, and also not yielding under hot operation, stable transmission, reliable.
Description
Technical field
The utility model relates to a kind of screw pair, is specially U-shaped back structure ball screw pair.
Background technique
Traditional ball wire bar pair have employed round plastic back structure, and the defect that this structure exists is when ball wire bar pair is when running up for a long time, and its back device can produce heavy wear because of operating under long-time high temperature, or even distortion.And circular back device cannot be used for large pitch screw pair, and impact resistance is poor.
Model utility content
For above-mentioned technical problem, the utility model provides a kind of screw pair of strong shock resistance, and concrete technological scheme is:
U-shaped back structure ball screw pair, comprise ball screw, ball nut and steel ball, the internal thread of ball nut matches with the outside thread on ball screw formation spiral rolling track, steel ball is arranged in spiral rolling track, described ball nut there is back groove, in back groove, reverser is installed, reverser is arranged the spiral rolling track matched with ball nut, spiral rolling track is as back passage, and spiral rolling track and ball nut internal thread form closed-loop path.
The U-shaped back structure ball screw pair that the utility model provides, adopts the reverser of oval turn-knob, reverser is arranged spiral rolling track as back structure, do not affect the rigidity of ball nut entirety, and nut can be made again effectively to carry out mild accurately transmission.Meanwhile, not only wear resistance is good when running up for the ball screw pair of this back structure, and also not yielding under hot operation, stable transmission, reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the reverser structural representation of this practicability;
Fig. 3 is ball nut structural representation of the present utility model.
specific implementation method
Accompanying drawings embodiment of the present utility model, as shown in Figure 1, U-shaped back structure ball screw pair, comprise ball screw 1, ball nut 2, back groove 3 and steel ball 4, ball nut 2 matches with the screw thread on ball screw 1, steel ball 4 is arranged in the spiral rolling track of ball nut 2 and ball screw 1, as shown in Figure 2, reverser 5 is arranged the spiral rolling track 51 matched with ball nut 2, as shown in Figure 3, ball nut 2 is milled with back groove 3, reverser 5 is matched with ball nut 2 by back groove 3, form the closed-loop path be made up of ball nut 2 and reverser 5.Spiral rolling track 51 is as back passage, steel ball 4 enters reverser 5 by the spiral rolling track between ball screw 1 and ball nut 2, steel ball 4 has striden across the crest of ball nut 2 in the spiral rolling track 51 of reverser 5, again enters the spiral rolling track between ball screw 1 and ball nut 2.The circulation of a corresponding circle steel ball of spiral rolling track 51.Go round and begin again, realize the relative movement between ball screw 1 and ball nut 2.
Claims (1)
1.U type back structure ball screw pair, comprise ball screw, ball nut and steel ball, the internal thread of ball nut matches with the outside thread on ball screw formation spiral rolling track, steel ball is arranged in spiral rolling track, it is characterized in that: described ball nut has back groove, in back groove, reverser is installed, reverser is arranged the spiral rolling track matched with ball nut, spiral rolling track is as back passage, and spiral rolling track and ball nut internal thread form closed-loop path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520122399.0U CN204477226U (en) | 2015-03-03 | 2015-03-03 | U-shaped back structure ball screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520122399.0U CN204477226U (en) | 2015-03-03 | 2015-03-03 | U-shaped back structure ball screw pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204477226U true CN204477226U (en) | 2015-07-15 |
Family
ID=53633017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520122399.0U Expired - Fee Related CN204477226U (en) | 2015-03-03 | 2015-03-03 | U-shaped back structure ball screw pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204477226U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806498A (en) * | 2017-11-08 | 2018-03-16 | 山东交通学院 | A kind of electromagnetic damper feed screw apparatus |
-
2015
- 2015-03-03 CN CN201520122399.0U patent/CN204477226U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806498A (en) * | 2017-11-08 | 2018-03-16 | 山东交通学院 | A kind of electromagnetic damper feed screw apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151204 Address after: Taicang City, Jiangsu province science and Technology Park 215400 Jianxiong Road No. 20 Patentee after: China run Hai Precision Technology Co., Ltd. Address before: 210039, No. 8, long Tibet Road, Yuhua Economic Development Zone, Nanjing, Jiangsu Patentee before: Excellent Nie Fu (Nanjing) Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20190303 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |